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Auflistung nach Schlagwort "physical security"

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  • Konferenzbeitrag
    Harmonizing physical and IT security levels for critical infrastructures
    (SICHERHEIT 2018, 2018) Chille, Vanessa; Mund, Sybille; Möller, Andreas
    We present a concept for finding an appropriate combination of physical security and IT security measures such that a comprehensive protection is provided. In particular, we consider security for critical infrastructures, such as railway systems. For classifying physical security measures, the so-called Protection Classes from the standard EN 50600 are used in our approach. To provide comprehensive protection for a system under consideration, these sets of explicit physical security measures need to be combined with other kinds of security, such as IT security and organizational security. We present a new classification approach named 'Type of Attack(er)' that allows for taking all aspects of security into joint consideration, and harmonizes physical and IT security levels by creating a link between EN 50600 and IEC 62443.
  • Zeitschriftenartikel
    Modern random number generator design – Case study on a secured PLL-based TRNG
    (it - Information Technology: Vol. 61, No. 1, 2019) Fischer, Viktor; Bernard, Florent; Bochard, Nathalie
    Random number generators (RNGs) are basic cryptographic primitives. They are used to generate cryptographic keys, initialization vectors, challenges and nonces in cryptographic protocols, and random masks in countermeasures against side channel attacks. RNGs designed for cryptography must generate unpredictable random numbers. According to recent security standards, the unpredictability of generated random numbers must be thoroughly evaluated. In this paper, we provide a concrete example – a phase-locked loop based RNG protected by novel dedicated embedded tests, on which we show how stringent security requirements including unpredictability of generated numbers can be met, while respecting the standards.